Most architects say: I want to use this type of glass, even if it's too reflective or doesn't let enough light in. However, the use of a certain type of glass might change the comfort level.

The American attitude towards efficiency and execution should always underlie architecture.

You'd never think of taking a cab if you had to walk a mile down Chicago's Michigan Avenue. But in a bad city you take a cab just to go around the corner.

I find if my body feels well and I exercise regularly, I think better, work better and feel better.

We prefer synthetic rather than natural materials. Natural products are almost too valuable. Wood is much harder to produce than metal. And metal is recyclable, while wood isn't.

When I think of some of my earlier work, it really seems a fortunate coincidence that I succeeded.

Sometimes I have to accept a job I don't really want. Hardly anybody comes up to you with a commission; it's all competitions these days.